The temperature of new concrete should not be allowed to fall below ______ F during the curing period.

During the curing period, it is critical to maintain the temperature of new concrete above a certain threshold to ensure proper hydration and strength development. The appropriate minimum temperature is 50°F.

At temperatures below this mark, hydration reactions can slow significantly, which may compromise the concrete's strength and durability. Curing helps to keep the concrete moist while it gains its strength, so temperatures above 50°F facilitate these chemical processes effectively.

If the temperature drops below this point, it can lead to issues such as incomplete curing, which increases the risk of cracking, reduced compressive strength, and overall structural integrity concerns in the long term. Maintaining the concrete temperature at or above the recommended level is therefore essential for achieving optimal performance of the concrete once it has cured.